Why is my Audi A7 making a strange sound?

I recently purchased a used Audi A7 and I noticed that it makes a strange humming noise when I accelerate. What could be causing this and how can I fix it?

The humming noise could be caused by a worn out wheel bearing. It is important to have this checked and replaced if necessary, as a faulty wheel bearing can lead to more serious issues.

Another possible cause could be a loose or damaged exhaust system. It is important to have this checked as well, as a damaged exhaust can affect the performance and fuel efficiency of your Audi A7.